Phil,
Here's some code which does what (I think) you want.
Please tell me if it doesn't...
Tom
Howard,
There is one thing which puzzled me while I was writing it -- why did I
need to create a session (by creating a persistent page property) before
the Action component would work?
TestPage.java
------------------------------------------------------------------
import com.primix.tapestry.BasePage;
import com.primix.tapestry.IEngine;
import com.primix.tapestry.IRequestCycle;
import com.primix.tapestry.IResponseWriter;
public class TestPage extends BasePage
{
public static class Thing
{
public Thing(String name)
{
this.name = name;
state = false;
}
private String name;
private boolean state;
public void setName(String name)
{
this.name = name;
}
public void setState(boolean state)
{
this.state = state;
}
public boolean getState()
{
return state;
}
public String getName()
{
return name;
}
}
static Thing[] s_database = new Thing[] {new Thing("Thing One"), new
Thing("Thing Two"), new Thing("Thing Three")};
private Thing thing;
private Thing[] database;
public void setThing(Thing thing)
{
this.thing = thing;
}
public Thing getThing()
{
return thing;
}
public Thing[] getThings()
{
return database;
}
public void setThings(Thing[] things)
{
database = things;
}
public void toggle(IRequestCycle cycle)
{
getThing().setState(!getThing().getState());
// update database here
}
public void beginResponse(IResponseWriter writer, IRequestCycle cycle)
{
// read database here
database = s_database;
fireObservedChange("things", database);
}
}
TestPage.jwc
---------------------------------------------------------------
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE specification PUBLIC
"-//Howard Ship//Tapestry Specification 1.1//EN"
"http://tapestry.sf.net/dtd/Tapestry_1_1.dtd";>
<specification class="TestPage">
<component id="for" type="Foreach">
<binding name="source" property-path="page.things"/>
<binding name="value" property-path="page.thing"/>
</component>
<component id="name" type="Insert">
<binding name="value" property-path="thing.name"/>
</component>
<component id="state" type="Insert">
<binding name="value" property-path="thing.state"/>
</component>
<component id="toggle" type="Action">
<binding name="listener" property-path="listeners.toggle"/>
<static-binding name="stateful">Boolean.FALSE</static-binding>
</component>
</specification>
TestPage.html
--------------------------------------------------------------------
<span jwcid="for">
<a href="#" jwcid="toggle"><span jwcid="name">Item
Name</span></a> <span jwcid="state"/><br>
</span>
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